Multi-Microphone Speech Enhancement - =1=Using LCMV ...
Multi-Microphone Speech Enhancement - =1=Using LCMV ...
Multi-Microphone Speech Enhancement - =1=Using LCMV ...
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The Transfer Function GSC<br />
RTF Estimation<br />
The Importance of the RTF<br />
Advantages<br />
Shorter than the ATF.<br />
Estimation methods are available:<br />
Using speech non-stationarity (Gannot et al., 2001).<br />
Using speech probability and spectral subtraction Cohen, 2004.<br />
RTF equivalent to Interaural Transfer Function (ITF).<br />
Drawbacks<br />
Non-causal<br />
CTF-GSC<br />
For high T 60 multiplication in the frequency domain is only valid for very<br />
long frames. Hence, the RTFs will be extended to convolution in the<br />
STFT domain (CTF-GSC) Talmon et al., 2009.<br />
S. Gannot (BIU) <strong>Multi</strong>-<strong>Microphone</strong> <strong>Speech</strong> <strong>Enhancement</strong> IWAENC 2012 17 / 53
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